Window-sash lock



0. HOLDSWORTH.

WINDOW SASH LOCK. APPLICATION FILED JAN. 16, 1920.

1. 34;5 92 P t t d July 6, 1920.

WWE'QS UNITED STATES WINDOW-SAS'H LOCK.

Application filed January 16, 1920.

To all whom, may concern:

Be it known that I, OLIVER HoLnswou'rH, a citizen of the United States,residing at Oakland, in the county of Alameda and the State 01California, have invented a new and useful Window-Sash Lock, oi whichthe tollowing is a specification.

My invention relates to improvements in window sash locks and the objectof my improvement is, to afford facilities for preventing the opening ofthe sashes beyond a given distance.

l. attain this object by the mechanism illustrated in the accompanyingdrawing in which the numerals refer to the several parts throughout theview.

The plate, 1, its upper and lower brackets, 2 and 3, to which isattached perpendicular front and back guide rods and 5, and providedwith an aperture in upper and a pocket in lower bracket for thereception of tubes referred to hereinafter, constitute the traintwmrk ofthe window sash lock, which is secured by screws to the face of stile ofupper sash.

The front guide rod l, being attached by a threaded end to bracket 2,and extending part way down toward bracket 3, the back guide rod 5,secured in the same manner to bracket 3, and extending upward intocenter of aperture provided in bracket 2, a slide bar 6, to which, intoand through is attached the lower end of a tube 7, that is slidablymounted over back guide rod 5, and adapted to slide back and forththrough aperture in bracket 2, during operation of slide bar (3, a tube8, pointed at lower end and provided with a rim at upper end slidablymounted over front guide rod 4:, lower or pointed end adapted to passthough an opening provided in slide bar 6, and into the pocket inbracket 3, thereby holding slide bar 6, in an operating positionoverlapping top rail of lower sash.

Upon the opening of either of the sashes, slide bar 6, adapted to andcarrying tube 8, by its top rim and sliding tube 7, through aperture inbracket 2, is moved by top rail Specification of Letters Patent.

Patented July 6, 1920.

Serial No. 351,904.

of lower sash upward under and is stopped by bracket 2, preventing thefurther opening of the sashes, the slide bar (3, and tubes '7 and 8,droppin to their former positions upon the closing of the same.

lVhen the sashes are in a closed position, the tube 8, may be raised outor" the pocket in bracket 3 and through the opening in slide bar 6,allowing slide bar 6, attached to back tube 7, to be turned on guide rod5, out of path of top rail of lower sash, allowing full movement 01 thesashes. V

l am aware that, prior to my invention, window sash locks ha been madeto swing out and into path ot ascending sash and supported by bracketplates. l therefore do not claim such a combination broadly, but

I claim:

A window sash lock of the character described, in combination with apair c vertical sliding sashes comprising a plate, adapted to beattached to the stile oi the upper sash, said plate having upper andlower ln'ackcts adapted to and carrying ba 1k and front guide rods,front and back tubes sli ably mounted on said guide rods, said upperbracket having an aperture and said lower bracket having a pocket forthe reception of the said front and back tubes, the said tubes peratingin conjunction with a projecting and retractable Slide bar which isattached to the lower end of salt back tube and pro vided with anopening for engagement with said front tube; said front tube beingpointed at its lower end and pn led with a rim at its upper end, isslida ly mounted through an opening in said slide bar, lower pointed endbeing adapted to I into said p= 'ket in the lower of brackets, holdingthe said slide bar in a locked and operating position overlapping thetop rail ot' the lower sash, whereby upon the movement of either of thesashes, said slide bar carrying the said trout tube by its top rim isforced upm'ard under and is stopper by said upper bracket, therebylimiting the relative movement of the sashes.

Old VER 1-H )LDSVVORTH.

